Visual preview for link traversal on the World Wide Web

This paper demonstrates a technique for augmenting current World Wide Web browser implementations with features found in classical hypertext applications but unknown to the World Wide Web community until now. An example implementation is shown using Netscape Navigator 4.x using JavaScript, dynamic HTML and Java. The implementation follows an architecture based on a proxy server which acts as a gateway between the Internet and the browsing client. Based on the detailed example, support for further features is discussed.     

Integrating temporal media and open hypermedia on the World Wide Web

The World Wide Web has since its beginning provided linking to and from text documents encoded in HTML. The Web has evolved and most Web browsers now support a rich set of media types either by default or by the use of specialised content handlers, known as plug-ins. The limitations of the Web linking model are well known and they also extend into the realm of the other media types currently supported by Web browsers. This paper introduces the Mimicry system that allows authors and readers to link to and from temporal media (video and audio) on the Web. The system is integrated with the Arakne Environment, an open hypermedia integration aimed at Web augmentation. The links created are stored externally, allowing for links to and from resources not owned by the (link) author. Based on the experiences a critique is raised of the limited APIs supported by plug-ins.     

On the World Wide Web

ABSTRACT

An analysis of Web citations was performed to examine three aspects of scholarly and research communication: use of authoritative information, use of correct citation style, and availability of the cited sources for the purpose of verification. Results of the study indicate that a database or a repository of Web citations needs to be established.     

Becoming an information provider on the World Wide Web

This paper describes the tools which are being evaluated at the University of Leeds for use by information providers on the World Wide Web. The paper also gives an introduction to the World Wide Web's client/server architecture and the Hypertext Markup Language (HTML). Information is provided on further sources of information which will assist information providers and trainers of information providers.The paper is intended for new information providers on the World Wide Web and for people who are involved in their training.     

The World Wide Web

Abstract

The World Wide Web is increasingly being used by libraries as a way to extend traditional services to patrons. The Web can also be used as a tool to facilitate communications between library professionals and to deliver presentations, organize exhibits, and develop demonstration projects. The allocation of personal Web work space on a library server provides librarians with a means to experiment with using the medium and a place to publish information of interest to the library profession. This paper explores the uses of the Web to enhance communications between library professionals and addresses some of the issues associated with such uses.     

Using the World Wide Web for teaching improvement

The World Wide Web has impacted the educational model in a fundamental way and forced educators to think of ways that this technology can be used to improve teaching effectiveness. This paper describes an implementation of the continuous improvement philosophy in a graduate level Operations Analysis class by using the web to obtain immediate and systematic feedback from students on lecture and other course activities. The feedback obtained is analyzed to determine how the delivery and content of the course can be improved. In the short-term the response is to address immediate problems or difficulties encountered by students. In the long-term a fully searchable web site with references to readings, audio/visual modules of class lectures, problem solutions and frequently asked questions (FAQ) materials is to be developed. Technology issues and the lessons learned from the experiment are discussed.     

A caching relay for the World Wide Web

We describe the design and performance of a caching relay for the World Wide Web. We model the distribution of requests for pages from the web and see how this distribution affects the performance of a cache. We use the data gathered from the relay to make some general characterizations about the web.     

Structured Cooperative Authoring for the World Wide Web

Alliance is a structured cooperative authoring application that allowspeople spread out across different locations to work together on documentproduction and maintenance. It uses the World Wide Web as an infrastructureto accomplish distributed document management, asynchronous group awareness,and communication and cooperation among distributed authors. A particularfeature of Alliance is that it can handle temporary disconnections from thenetwork without disrupting the cooperative editing. In this article wereport our experience in designing and implementing Alliance, focusing onthe mechanisms that needed to be developed in order to support cooperativeauthoring using the Web.     

WWW上的缓存技术

WWW上的缓存技术被认为是改进Web性能的有效技术之一，总观了缓存系统所要解决的问题，针对需要解决的问题，总结了目前为止所提出的各种缓存策略，最后概括了理想的WWW缓存系统应该具备的性能指标。     

Caching on the World Wide Web

With the recent explosion in usage of the World Wide Web, the problem of caching Web objects has gained considerable importance. Caching on the Web differs from traditional caching in several ways. The nonhomogeneity of the object sizes is probably the most important such difference. In this paper, we give an overview of caching policies designed specifically for Web objects and provide a new algorithm of our own. This new algorithm can be regarded as a generalization of the standard LRU algorithm. We examine the performance of this and other Web caching algorithms via event- and trace-driven simulation     

Mosaic and the World Wide Web

The World-Wide Web, an information service on the Internet, uses hypertext links to other textual documents or files. Users can click on a highlighted word or words in the text to provide additional information about the selected word(s). Users can also access graphic pictures, images, audio clips, or even full-motion video through hypermedia, an extension of hypertext. One of the most popular graphics-oriented browsers is Mosaic, which was developed at the National Center for Supercomputing Applications (NCSA) as a way to graphically-navigate the WWW. Mosaic browsers are currently available for Unix workstations running X Windows, PCs running Microsoft Windows, and Macintosh computers. Mosaic can access data in WWW servers, Wide Area Information Servers (WAIS), Gopher servers, Archie servers, and several others. The World-Wide Web is still evolving at a rapid pace. Distributed hypermedia systems on the Internet will continue to be an active area of development in the future. The flexibility of the WWW design, its use of hyperlinks, and the integration of existing WAIS and Gopher information resources, make the WWW ideal for future research and study. Highly interactive multimedia applications will require more sophisticated tools than currently exist. The most significant issue that needs to be resolved is the mismatch between WWW system capabilities and user requirements in the areas of presentation and quality of service     

World Wide Web概述

随着网络化时代的到来,人们越来越关注Ｉｎｔｅｒｎｅｔ上的各种功能,为此本文对基于Ｉｎｙｔｅｒｎｅｔ的ＷＷＷ网的组织,浏览器,地址编排和工作原理作了简要的概述。     

Webvise: browser and proxy support for open hypermedia structuring mechanisms on the World Wide Web

This paper discusses how to augment the World Wide Web with an open hypermedia service (Webvise) that provides structures such as contexts, links, annotations, and guided tours stored in hypermedia databases external to the Web pages. This includes the ability for users collaboratively to create links from parts of HTML Web pages they do not own and support for creating links to parts of Web pages without writing HTML target tags. The method for locating parts of Web pages can locate parts of pages across frame hierarchies and it also supports certain repairs of links that break due to modified Web pages. Support for providing links to/from parts of non-HTML data, such as sound and movie, will be possible via interfaces to plug-ins and Java-based media players.The hypermedia structures are stored in a hypermedia database, developed from the Devise Hypermedia framework, and the service is available on the Web via an ordinary URL. The best user interface for creating and manipulating the structures is currently provided for the Microsoft Internet Explorer 4.x browser through COM integration that utilizes the Explorer's DOM representation of Web-pages. But the structures can also be manipulated and used via special Java applets and a pure proxy server solution is provided for users who only need to browse the structures. A user can create and use the external structures as `transparency' layers on top of arbitrary Web pages, the user can switch between viewing pages with one or more layers (contexts) of structures or without any external structures imposed on them.     

Laying the foundations for a World Wide Argument Web

This paper lays theoretical and software foundations for a World Wide Argument Web (WWAW): a large-scale Web of inter-connected arguments posted by individuals to express their opinions in a structured manner. First, we extend the recently proposed Argument Interchange Format (AIF) to express arguments with a structure based on Walton's theory of argumentation schemes. Then, we describe an implementation of this ontology using the RDF Schema Semantic Web-based ontology language, and demonstrate how our ontology enables the representation of networks of arguments on the Semantic Web. Finally, we present a pilot Semantic Web-based system, ArgDF, through which users can create arguments using different argumentation schemes and can query arguments using a Semantic Web query language. Manipulation of existing arguments is also handled in ArgDF: users can attack or support parts of existing arguments, or use existing parts of an argument in the creation of new arguments. ArgDF also enables users to create new argumentation schemes. As such, ArgDF is an open platform not only for representing arguments, but also for building interlinked and dynamic argument networks on the Semantic Web. This initial public-domain tool is intended to seed a variety of future applications for authoring, linking, navigating, searching, and evaluating arguments on the Web.     

A Multimedia Presentation Toolkit for the World Wide Web

This paper describes the design and implementation of MPRES, a Multimedia Presentation Toolkit for the WWW. The WWW has seen phenomenal growth over the last couple of years. It has become a vast repository of multimedia information that is accessible to virtually anyone having a browser. MPRES is a multimedia presentation system that allows a user to compose and render a presentation consisting of objects referenced by their URLs (Uniform Resource Locators). It uses the concept of dynamic documents to render on a WWW browser, a sequence of multimedia scenarios, having objects of types such as audio, image, plaintext, HTML (Hypertext Markup Language) document and animation. MPRES Author, the authoring subsystem, allows the user to interactively test and compose such a presentation, using the Netscape Navigator to collect multimedia resources from the WWW. A presentation database stores the presentations and provides a convenient frontend for accessing them. © 1997 John Wiley & Sons,Ltd.     

Toward support for hypermedia on the World Wide Web

As organizations rush to embrace the World Wide Web as their primary application infrastructure, they should not bypass the benefit of hypermedia support. The Web's infrastructure can serve as an interface to all interactive applications and, over time, will become the graphical user interface model for new applications. Ubiquitous hypermedia support should become the jewel of the Web environment. Through Web integration, hypermedia could become an integral part of every interactive application. With the proper tools to support hypermedia in Web application development, it will become second nature for developers and individual authors to provide supplemental links and hypermedia navigation. However, as organizations adopt the Web as their primary application infrastructure, designers may use Java and other tools to recreate current application functionality, and not take advantage of the Web's hypermedia-augmented infrastructure. If users, designers, MIS departments and organizations don't demand hypermedia support, hypermedia may get lost in the frenzy of Web integration     

互联网中隐私权的问题研究及其保护策略

随着互联网的广泛使用，有关互联网的各种问题引起了人们广泛的重视，其中，隐私权保护问题是焦点之一。本文首先提出了Internet上的隐私以问题，指出对隐私权侵犯的具体形式。接着，从社会生产方式的转变及社会交换关系方面分析了这一问题，指出其根本原因。最后，从技术方面，给出目前几种保护个人隐私权的方法。     

Moving happily through the World Wide Web

Looks at some practical approaches to improving the process of interacting with information distributed over the global information infrastructure, specifically for the World Wide Web. The introduction of NCSA Mosaic changed the way we get information over the Web. With the click of a button, Mosaic's graphical user interface made it possible to browse and retrieve literally any information accessible through the Web. This is true if you know the document's Universal Resource Locator (URL), an identifier expressing its location. You type in this address and sooner or later (depending on document size and traffic at the time), the document appears on your screen. If you do not know the URL, or even which documents contain the requested information, you might want to browse or search the Web. Interacting with information on the Web starts with browsing and searching; continues with selecting, digesting and assimilating information; terminates with generating new information; and begins anew. The user's needs and desires must occupy center stage during development of Web systems and sites. The approach chosen should let users interact easily and effectively with the information contained throughout large arrays of documents. Visualization, computer graphics, and just plain common sense in designing Web pages and presenting information make the process better for users. This article discusses how to construct effective presentations (Web pages)